[PATCH v3 3/3] riscv: fix building compressed EFI image

[Andy Shevchenko]

On Mon, Apr 13, 2026 at 12:22:02PM +0300, Dmitry Antipov wrote:
> When building vmlinuz.efi with CONFIG_EFI_ZBOOT enabled,
> '__lshrdi3()' is also needed to fix yet another link error:
> 
> riscv32-linux-gnu-ld: drivers/firmware/efi/libstub/lib-cmdline.stub.o: in function `__efistub_.L49':
> __efistub_cmdline.c:(.init.text+0x202): undefined reference to `__efistub___lshrdi3'
> 
> And since riscv64 can have CONFIG_EFI_ZBOOT but doesn't need
> these library routines, introduce CONFIG_EFI_ZBOOT_EXTRAS to
> manage linking of lib-ashldi3.o lib-lshrdi3.o on riscv32 only.

> Reviewed-and-tested-by: Charlie Jenkins <thecharlesjenkins at gmail.com>

At most we use Reported-and-tested (as they have at least some relationship),
but these two (and in general the combined tags are discouraged) must be split.

> Signed-off-by: Dmitry Antipov <dmantipov at yandex.ru>

...

> +config EFI_ZBOOT_EXTRAS

Can we name them rather after libgcc?

Exempli gratia

config EFI_ZBOOT_USE_LIBGCC

?

> +	bool
> +	default y if RISCV && 32BIT

-- 
With Best Regards,
Andy Shevchenko